Method of installing a mining tooth point
CA 2000900 C · Owner: Jones, Herbert E. · Inventors: Jones, Herbert E.; Briscoe, Terry L.; Kreitzberg, John S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A MINING TOOTH POINT ABSTRACT OF THE DISCLOSURE:, A tooth point having key slots top and bottom wherein the rear walls of the slots are outwardly convergent relative to the front walls to permit receipt of a curved locking pin.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed October 17, 1989 and granted September 20, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 17, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 17, 2011.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.